The evo is better on the race track. not 1/4 track. I like the EVO better then the STI. I don't like the bird trap on the hood of the STI.

 

Sure the sti has more power but the 6 spd was set up more for drag then top end. STi has a final drive of 3.9:1 wile the evo has a final drive of 4.529:1 making the evos gearing longer and there for giving the evo a better top end. Subaru claims a top end of 145 for the STi while mitsubishi claims a top end of 156 for the evo.

 

the top end on the Sti is restricted by a governer, while the top end on the evo is redline limited

 

Hi,

First, I think having 6 speeds so closely spaced can actually hurt the STi since you have to shift so many times for drag racing. Also think the STi is electronically limited top speed?

Anyway, a lower final drive makes your gearing longer. This makes sense for the STi since it also has an extra gear. The EVO has very tight gearing with a FD of 4.529:1.

In my GSR, the FD was ~4.4:1. I swapped to an ITR tranny with gearing that is closer together, and added a JDM FD which was 4.75:1 to make the gearing even tighter.

Finally, isn't fuel cut for the EVO about 7400? If so, you can look at your speed at ~3700 rpm and double that for top speed as long as you can spin 5th gear to fuel cut. I don't think the EVO is that quick up top, but I have hit indicated 140 up a slight hill with a 200 lbs passenger along with me (~160 lbs). I would think that with enough mods you can spin 5th gear and hit 160+, if you were crazy enough to try.

Thoughts?

FB

 

Pli, you got final drive backwards as far gearing for top end.

berkel, don't think you can just double your speed at 3700 rpm.
There are other factors to consider. Drag and friction are a few that come to mind.

Yes, the STi is electronically limited.

 

Evo has better potential for topend, Big 16G and ease of tuning. It was VERY detuned for US market, I did 2 mods and would show tails to a STI even from a roll, sti is way harder to mod and doubt the engine internals are as strong. STroked engines make more low end torque but suffer up top.

 

Actually, what I meant was that your theoretical top end would be if you double the speed at 3700 rpm (or whatever half of fuel cut or redline is). I did said IF you have enough power to spin 5th gear.

Basically, you're either gear limited, drag limited, or electronically limited. If you're gear limited, it's when you spin you're biggest gear as fast as it goes. If you're drag limited, drag prevents you from achieving that maximum engine speed in the biggest gear. If you're electronically limited, obviously the ecu or other governor cuts fuel or in some way limits top speed.

The other thing to look at is the grade of the road. If there is a slight (even imperceptible) downgrade, you'll increase your top speed (if you're drag limited) quite a bit. In other words, the road may look flat, but may actually slope downwards. So your "top speed" may not be scientific of what you could achieve on a totally flat road, but oh well, it's real world, heh. I would guess a stock EVO is drag limited on a FLAT road, but with enough mods or a slight downhill, I bet you could redline 5th gear.

As I said before, I hit indicated 140 (we haven't even gotten into speedo error ), with a ~200lbs passenger and on a slight uphill and the car was still pulling, albeit fairly slowly...

Take care,

FB

 

The quicker steering rack is reason alone to choose the Evo for twisty roads.

 

0-130 the STI is ahead by 4 seconds according to Car and Driver.... that seems about right... my Evo sucks from 5th gear...

I attempted a top speed run, but after about 1.5 miles I was only at 145mph and had to brake for traffic.....and the last 1/2 of a mile was even somewhat downhill.

STI has 6th gear to help spread out the gears better....

0-150 would probably be about 45 seconds.....

 

That's strange.
My STi pulls quite hard to little below 150 mph on speedometer (so probably less then 140 mph) and suddenly stops. So up to the limiter it goes quite strong. EVO is not much weaker so it should pull the same. And STi has small injectors and especially a small turbo, which goes quite fast out of breath.

 

162... what the rpm's were...

 

What do you know about STi's engine what other people don't?
I did not hear yet about any blown STi's engine by a tuner and they are still working on it. And Vishnu was surprised by it's potential.

 

Scot. How does 0-100 acceleration compare between your Evo and '03 Cobra? Just curious. Thanks, Mike.

 

I can't remember where I read this but one of the tuners said mod potential definately goes to the evo. So in the end when all is said and done, the mods have been put on, the evo would be faster. This isn't proven but it does mirror alot of peoples thoughts about evo being easier to work on and make go faster.

 

I had the pleasure of encountering an STi on a clear three lane a while back. I was crusing along in third (I was driving slow, enjoying the sights). He pulled up next to me and gave me a thumbs up and the signal that he wanted to race. We both punched our cars at about the same time. From third to the top of fourth, I pulled about two car lengths on him. Afterwards, we both pulled over and talked. His STi was stock. My EVO (At that time) had a 3" turbo back and intake. Based on my old dyno's with those mods, I was pushing 300hp to the flywheel (About even with a stock STi). I think what gave me an advantage was lighter weight (He was a big dude, I am small) and gearing.